The C Major Scale

First of all, whats a scale? A scale is a pattern of notes starting in one note and ending with that same note, going through every note (A, B, C, D, E, F, G) in order before going back to that note. The note that it starts and ends with is the key. The C major scale is very important because with it you can figure out allot of riffs, and it's what you play on the piano, starting at C and playing only on the white keys. The order of the notes is C, D, E, F, G, A, B, C. Here's how you play it:
----------------------------0(A)-2(B)-3(C)-
------------0(E)-1(F)-3(G)-----------------
-0(C)-2(D)---------------------------------
--------------------------------------------
You can make this scale into any key by moving it the appropriate number of steps up. Steps are how many notes between notes. Up one half step means turn it up to a #/b (A-A#/Bb) or on B-C or  E-F you go only one half step up, so no B#/ Cb or E#/Fb. And one step up means to the next note, so A-B or F-G. You don't play on your G string because it's your re-entrant string, which means it's higher than the string below it, unlike guitar, which doesn't have a re-entrant string. I'll give you a ex ample for what I was talking about earlier, about figuring out allot of riffs with the scale. Here's Twinkle Twinkle Little Star:

-----------0-0-------------------------------------------------------------0-0-----------------------
------3-3------3-1-1-0-0--------3-3-1-1-0-0---3-3-1-1-0-0-------3-3-------3-1-1-0-0-----
-0-0-----------------------2-2-0---------------2--------------2-0-0-----------------------2-2-0-
-------------------------------------------------------------------------------------------------------
Notice how every note in it is in the C major scale. Have fun!